I had to comment out both versions of 'operator +' in misc.h at line 382 in
order to get a clean build. Then I had trouble building the validation test
code. Ultimately, I had to insert a cast to BufferedTranslation& in the
calls to TestFilter in validat1.cpp.
Finally, I had to set the structure alignment of the PPC processor
preferences to PowerPC rather than 68K; and I turned off 'map newlines to
CR'.